Three recipes for improving the image quality with optical long-baseline interferometers: BFMC, LFF, & DPSC - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Proceedings of SPIE, the International Society for Optical Engineering Année : 2012

Three recipes for improving the image quality with optical long-baseline interferometers: BFMC, LFF, & DPSC

Florentin Millour
Martin Vannier
  • Fonction : Auteur
  • PersonId : 927935
Anthony Meilland

Résumé

We present here three recipes for getting better images with optical interferometers. Two of them, Low- Frequencies Filling and Brute-Force Monte Carlo were used in our participation to the Interferometry Beauty Contest this year and can be applied to classical imaging using V 2 and closure phases. These two addition to image reconstruction provide a way of having more reliable images. The last recipe is similar in its principle as the self-calibration technique used in radio-interferometry. We call it also self-calibration , but it uses the wavelength-differential phase as a proxy of the object phase to build-up a full-featured complex visibility set of the observed object. This technique needs a first image-reconstruction run with an available software, using closure-phases and squared visibilities only. We used it for two scientific papers with great success. We discuss here the pros and cons of such imaging technique.
Fichier principal
Vignette du fichier
millour2012.pdf (923.61 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00719445 , version 1 (19-07-2012)

Identifiants

Citer

Florentin Millour, Martin Vannier, Anthony Meilland. Three recipes for improving the image quality with optical long-baseline interferometers: BFMC, LFF, & DPSC. Optical and Infrared Interferometry III, Jul 2012, Amsterdam, Netherlands. ⟨hal-00719445⟩
178 Consultations
71 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More